Characterization of perovskite solar cells: Towards a reliable measurement protocol
Characterization of perovskite solar cells: Towards a reliable measurement protocol
复制标题
DOI：
10.1063/1.4960759
复制
发表时间：
2016-08
期刊：
影响因子：
6.1
通讯作者：
Eugen Zimmermann;K. Wong;Michael Müller;Hao Hu;P. Ehrenreich;M. Kohlstädt;U. Würfel;S. Mastroianni-S.-Mastro
中科院分区：
文献类型：
--
作者：
Eugen Zimmermann;K. Wong;Michael Müller;Hao Hu;P. Ehrenreich;M. Kohlstädt;U. Würfel;S. Mastroianni-S.-Mastro
铅卤化物钙钛矿太阳能电池的功率转换效率大幅提高，据报道效率创纪录地超过20%，这使得这种材料非常有希望成为传统无机太阳能电池的低成本替代品。然而，由于在电流密度-电压测量期间的不同严重的“滞后”行为，其强烈地依赖于扫描速率、器件和测量历史、制备方法、器件架构等，通常使用的太阳能电池测量不能给出可靠的或甚至可再现的结果。对于商业化方面以及在不同实验室之间比较不同设备的结果的可能性，有必要建立一个给出可重现结果的测量方案。因此，我们比较来自标准电流密度-电压测量的器件特性与从最大功率点和开路电压的自适应跟踪获得的稳定值，以及从时间分辨电流密度-电压测量中提取的特性。我们的研究结果提供了对正确确定器件性能的挑战的深入了解，并提出了一种可靠表征的测量方案，该方案易于实施，并已在不同实验室制造的不同钙钛矿太阳能电池上进行了测试。
Lead halide perovskite solar cells have shown a tremendous rise in power conversion efficiency with reported record efficiencies of over 20% making this material very promising as a low cost alternative to conventional inorganic solar cells. However, due to a differently severe “hysteretic” behaviour during current density-voltage measurements, which strongly depends on scan rate, device and measurement history, preparation method, device architecture, etc., commonly used solar cell measurements do not give reliable or even reproducible results. For the aspect of commercialization and the possibility to compare results of different devices among different laboratories, it is necessary to establish a measurement protocol which gives reproducible results. Therefore, we compare device characteristics derived from standard current density-voltage measurements with stabilized values obtained from an adaptive tracking of the maximum power point and the open circuit voltage as well as characteristics extracted from time resolved current density-voltage measurements. Our results provide insight into the challenges of a correct determination of device performance and propose a measurement protocol for a reliable characterisation which is easy to implement and has been tested on varying perovskite solar cells fabricated in different laboratories.